RESPIRATION

Introduction ? Definition and importance of respiration.
Burning food.
The mitochondrion.

By the end of the lesson, the learner should be able to:
By the end of the lesson, the learner should be able:
To define respiration.
To explain significance of respiration.
To describe an experiment investigating the gas given off when food is burnt.
To state functions of mitochondrion in respiration.

Q/A: Definition

Brief discussion of significance of respiration.
Teacher demonstration: Burning a food sample.
Testing for the gas evolved during combustion.
Drawing structure of the mitochondrion.
Explain function of the mitochondrion.

text book
text book
Wall charts- The mitochond-rion

K.L.B. BK 2
PP. 73-74

RESPIRATION

Aerobic respiration.

By the end of the lesson, the learner should be able to:
To explain phases of aerobic respiration.
To state difference between aerobic and anaerobic respiration.

Detailed discussion.
Writing down equations of food breakdown.

text book

K.L.B. BK 2
PP.74-76

RESPIRATION

Anaerobic respiration.

By the end of the lesson, the learner should be able to:
To describe anaerobic respiration.

Observe set up experiments.
Detailed discussion punctuated with probing questions:

Glucose
Yeast
Thermometer

K.L.B. BK 2
P.77

RESPIRATION

Oxygen ?debt?.
Applications of anaerobic respiration.

By the end of the lesson, the learner should be able to:
To explain the term ?oxygen debt?.
To explain the effect of ?oxygen debt? on the amount of energy released during respiration.

To explain applications of anaerobic respiration.

Probing questions.

Detailed discussion.
Q/A: Products of fermentation process.
Listing down various applications of anaerobic respiration.

text book

K.L.B. BK 2
P.78
K.L.B. BK 2
P. 79

RESPIRATION

Respiratory substrates & respiratory quotient.

By the end of the lesson, the learner should be able to:
To identify respiratory substrates in the body.
To define respiratory quotient.
To calculate R.Q.

Brief discussion/ explanations.

Exposition of definition and its significance.
Problem solving.

text book

K.L.B. BK 2
P. 79

RESPIRATION

Rate of respiration.

By the end of the lesson, the learner should be able to:
To state and explain factors affecting rate of respiration.

Detailed discussion and explanations.

text book

K.L.B. BK 2
PP. 80-81

EXCRETION AND HOMEOSTASIS

Introduction- Definition and importance of homeostasis and excretion.
Excretion in plants.

By the end of the lesson, the learner should be able to:


To define homeostasis and excretion.
To explain necessity of excretion in plants and animals.
To name plants excretory products.
To state uses of excretory products of plants.

Q/A: Definitions of digestion, ingestion and egestion, secretion and excretion.

Discuss importance of excretion in plants and animals.

Probing questions.
Exposition of new terms.
Discuss uses and abuses of plant excretory products.

text book
Some plants excretory products.

K.L.B. BK 2
PP. 83-84

EXCRETION AND HOMEOSTASIS

Excretion and homeostasis in unicellular organisms.

By the end of the lesson, the learner should be able to:
Describe excretion and homeostasis in an amoeba and a paramecium.

Q/A: Review diffusion, structure of an amoeba.
Discuss excretion and homeostasis in an amoeba and a paramecium.

text book

K.L.B. BK 2
PP. 84-85

EXCRETION AND HOMEOSTASIS

Excretion and homeostasis in animals.

By the end of the lesson, the learner should be able to:
To identify excretory organs in various animals.

Exposition and discussion.
Observe drawings of various animals showing excretory organs.

Specimens of platyhelmin-thes, annelida, insects.

K.L.B. BK 2
P. 85

EXCRETION AND HOMEOSTASIS

The mammalian skin.

By the end of the lesson, the learner should be able to:
Draw and label the structure of the mammalian skin.
To describe functions of parts of the mammalian skin.

Permanent slides of mammalian skin.

K.L.B. BK 2
PP. 86-87

EXCRETION AND HOMEOSTASIS

The lungs.

By the end of the lesson, the learner should be able to:
To explain the role of lungs as excretory organs.

Exposition and discussion.

Chart/ model- Mammalian lungs.

K.L.B. BK 2
P. 87

EXCRETION AND HOMEOSTASIS

The kidneys structure.

By the end of the lesson, the learner should be able to:
To describe the external structure of kidney.
To describe the internal structure of the kidney.

Observe external features of a kidney.
Observe internal drawing and labeling of the kidney.

Wall-Charts?internal organs of a kidney.

K.L.B. BK 2
PP. 89-90

EXCRETION AND HOMEOSTASIS

The nephron.
Urine formation.

By the end of the lesson, the learner should be able to:
Describe features of the nephron.
To explain formation of urine.

Discuss features of the nephron.
Draw structure of the nephron.
Label the diagram.
Detailed discussion.

Chart?Kidney nephron.

K.L.B. BK 2 PP 90

EXCRETION AND HOMEOSTASIS

The loop of Henle.

By the end of the lesson, the learner should be able to:
To explain the function of the loop of Henle; and how it?s adapted to its function.
To discuss the role of ADH in determination of concentration of urine.

Discussion and explanations.

Probing questions.

Chart-
The nephron.

K.L.B. BK 2 PP 91-92

EXCRETION AND HOMEOSTASIS

Kidney diseases and disorders.
The Liver.

By the end of the lesson, the learner should be able to:
To name kidney diseases and disorders and state methods of prevention and / treatment.
To draw and label a diagram of the liver.

Discussion and Explanations.
Drawing and labeling diagram of the liver.

text book
Chart-Structure of the liver

K.L.B. BK 2 PP 92

EXCRETION AND HOMEOSTASIS

Deamination.
Other functions of the liver.
Liver disorders.

By the end of the lesson, the learner should be able to:
To explain the function of the liver in deamination.
To state and explain other functions of the liver.
To name and discuss kidney disorders.
To identify methods of preventing and treating these disorders.

Probing questions.

Discussion
Probing questions.
Discussion
Exposition and discussion.

text book

K.L.B. BK 2 PP 95
K.L.B. BK 2 PP 95-96

EXCRETION AND HOMEOSTASIS

Homeostasis.
The feedback mechanism.

By the end of the lesson, the learner should be able to:
To define the concepts of internal environment and homeostasis.
To differentiate between positive and negative feedback and state their roles in maintaining the desirable point.

Exposition and discussion.
Schematic representation of feedbacks.

text book
Chart-
Schematic diagram of feedback mechanism

K.L.B. BK 2 PP 97-98

EXCRETION AND HOMEOSTASIS

The hypothalamus.

By the end of the lesson, the learner should be able to:
To explain the role of hypothalamus in thermoregulation.

Exposition and detailed discussion.

text book

K.L.B. BK 2 PP 98

EXCRETION AND HOMEOSTASIS

The skin and thermoregulation.
Blood vessels and their functions in thermo-regulation.
Homeostatic behavioral activities.

By the end of the lesson, the learner should be able to:
To explain the function of the skin in thermoregulation.
To explain the adaptation of blood vessels and their function in thermo-regulation.
To state and explain various homeostatic behavioral activities.

Exposition and discussion.
Exposition and discussion.
Drawing schematic diagrams.
Discussion on control of body temperature.
Probing questions.

text book
text book
text book,video

K.L.B. BK 2 PP 98
K.L.B. BK 2 PP 98-99

EXCRETION AND HOMEOSTASIS

Osmoregulation.
Blood sugar.

By the end of the lesson, the learner should be able to:
To describe water and salts balance in the body.
To discuss effects of insufficient/ excess sugar in the blood.
To explain regulation of blood sugar.

Detailed discussion.

text book

K.L.B. BK 2 PP 100-101

EXCRETION AND HOMEOSTASIS

Diabetes.

By the end of the lesson, the learner should be able to:
To distinguish diabetes mellitus from diabetes inspidus.
To identify simple symptoms of diabetes mellitus and diabetes inspidus.

Detailed discussion.

Probing questions.

Topic review.

text book

K.L.B. BK 2 PP  103